Passing one element at a time is fine, but we often have lists or vectors or matrices of information that we want to passback and forth between our client and server.
每次只传送一个元素是可以的，但我们通常有一个列表或向量或矩阵的信息要在客户机和服务器之间来回传送。
2
The controller can also tell the view to update itself and passback updated values.
控制器还可以告诉视图更新自身，并传回更新后的值。
3
He doesn't feel the need to passback into the past and prophesy again.